Doc Daneeka

Doc Daneeka is a fictional character in the 1961 novel Catch-22 by Joseph Heller. Doc Daneeka is the squadron physician and a friend of the novel's protagonist, Yossarian. "Catch-22" itself is first explained in the novel when Yossarian asks Doc Daneeka to excuse him from combat duty. Doc Daneeka is also the title of Chapter 4 of the novel.